Massachusetts, 1968
Buku Teks
Lurie, Jonathan
Alfred A.Knopf, 1983
Buku Teks
Wattenberg, Ben J
Doubleday, 1974
Buku Teks
edited and with an introduction by George Rogers Taylor
D.C. Heath, 1972
Buku Teks
Council for Public Interest Law, 1976
Buku Teks